In D.C. generators, lap winding is used for

The correct answer is: A. High voltage, high current

In a DC generator, the windings are arranged in a way that the current flows through the coils in a series. This arrangement results in a higher voltage output. The lap winding is used for high voltage, high current applications.

The other options are incorrect because:

• Option B: Low voltage, high current. This is not the correct answer because the lap winding is used for high voltage, high current applications.
• Option C: High voltage, low current. This is not the correct answer because the lap winding is used for high voltage, high current applications.
• Option D: Low voltage, low current. This is not the correct answer because the lap winding is used for high voltage, high current applications.

I hope this helps!